Nathaniel hutcherson



N. HUTGHERS'ON/ Attachment toSaw Mills.

No. 239,502. Patent edMarch 29,1881.

WITNESSES I INVENTOR flw L/7 %WM#MW V ATTORNEYS UNITED STATES PATEN OFFICE.

NATHANIEL HUTGHERSON, OF SANDY RlDGE, NORTH CAROLINA.

ATTACH M ENT TO sAw- M LLS.

SPECIFICATION forming part of Letters Patent No. 239,502, dated March 29, 1881.

' Application filed November 20, 1880. (No model.)

To all whom it may concern:

Be it known that I, NATHANIEL HUTGHER- soN, of Sandy Ridge, in the county of Stokes and State of North Carolina, have invented a new and valuable Improvement in Attachments to Saw-Mills; and I do hereby declare that the following is a full, clear, and exact description of the construction andoperation of the same, reference being had to the annexed drawings, making a part of this specification, and to the letters and figures of refertreadle, and in a guide and kerf-opener connected with the stationary frame, as will be hereinafter fully described, and particularly pointed out in the claims.

Referring by letter to the accompanying drawings, A designates the stationary-frame of the attachment, which is to be connected to the saw-millframein such a mannerasto permit the saw to occupy the recess a in the frame A. The end pieces, a a, of the-frame A are ,pro-

vided with grooves G, inclined, as shown in Fig. 2, in which the end bars, 6 e, of a sliding frame, B, work when the attachment is in operation. The under faces of the end pieces, 6 e, are provided with racks h, which engage mutilated-gear wheels at n on the rock-shaft N, having a hand-lever, n".

The cross-beam d of the frameB is provided with standards g, which enter vertical recesses 13 in the inner face of the guide and kerf-opener E when the sliding frame B is in its normal position. The kerf-opener E is wedge-shaped,

.as shown, and is of wood, except an upper projecting portion, E, which is of metal. The kerf-opener is removabl y connected to the rear beam of the frame Aby ordinary dowel-pins, and by a pivot hook-arm, 19, working in staples "r 'r, and having a dog at its upper end,

which enters a hole in the end of the kerfopener, as shown.

The arm 0 of the sliding frame B is provided with an arm, p, having a dog, q, working" in a notch, q,in the rear edge of the bar d of the frame B, said arm pbeing held down in anormal position bya spring, as. A treadle, D, having an upwardly-extending arm, 8, passed through a staple in the end piece, a, of the frame and within reach of the foot of operator at the lever a, is used to push the arm 19 upward to cause the dog q to project above the top of the sliding frame B when necessary in cutting short plank. The kerf-opener is made removable, inorder that it may be taken off when very heavy timber is being cut.

The operation of the attachment is as follows: The attachment is put in place and connected, in any suitable manner, to the sawmill frame, or otherwise made rigid, permitting the saw to occupy the recess a. As the carriage moves the log forward the saw cuts the kerf, and the wedge E enters the kerf and opens it and guides the plank. When the butt or stump-shot is reached the plank will be broken 0%, and will fall upon the bars I) b of the frame A. These bars I) are curved, as shown, to accommodate the sliding frame Bin its movements. Rollers, as at g, maybe employed to lessen the friction of the plank upon the frame B. When the plank has dropped upon the frame the lever n is operated to slide the frame B and carry the plank up onto the horizontal portion of the bars I) b and end pieces, a. The curve in said bars b and the inclines 0 permit the frame to be receded from beneath the plank and returned to its normal position. The plank may be then removed from the attachment.

The guide and kerf opener prevents the planks from falling on the saw.

The arm 19, with its dog q, is used only in removing short timber, and is raised up by the treadle D and arm 8 to grasp the short plank at that end, to prevent it from being turned off at the end of the attachment when the sliding frame is operated to remove the plank.

Having thus fully described my invention, what I claim as new,-and desire to secure by Letters Patent, is-

I. In an attachment for saw-mill carriages,

the frame A, having grooves c c and cross-bars i I) b, in combination with the sliding frame B, having standards g, rook-shaft N, and gears and rack 02 n h h, and kerf-opcner E, substantially as set forth.

2. In an attachment for saw-mill carriages, the treadle D, having arm 8, in combination with the spring-arm p :1, having the dog q, and the sliding frame B, substantially as set forth.

.3. In an attachment for saw-mill carriages, the combination, with a stationary frame, A, I

and a sliding frame, B, of the removable guide and kerf-opener E E, secured to .the frame A by dowel-pins, and the hook-arm 19, working in staples 1' r, substantially as set forth.

In testimony that I claim the above I have hereunto subscribed my name in the presence of two witnesses.

NATHANIEL HUTOHERSON.

Witnesses:

JOHN STADLER ZIGLER, WILLIAM PAsLEY ALLEY. 

